Disp fx of triquetrum bone, l wrist, subs for fx w nonunion

This code signifies a fracture of the triquetrum bone in the left wrist that has not healed properly (nonunion) and is displaced. It indicates that the patient is presenting for follow-up care or treatment related to this ongoing healing complication, not the initial injury.

Apply this code when a patient with a previously diagnosed displaced left triquetrum fracture is seen for management of a confirmed nonunion. This includes visits for continued conservative treatment, surgical planning for nonunion repair, or post-operative care for a nonunion procedure.

• Ensure documentation clearly states "nonunion" and "displaced" for the left triquetrum fracture.
• Verify this is a "subsequent encounter" and not the initial treatment for the fracture.
• Always code the underlying cause of the fracture if known and relevant to the encounter.